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Wood density
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Part 1 of ebook "Timber: Structure, properties, conversion and use" provides readers with contents including: nomenclature of timbers; structure of wood; gross structure; cellular structure; molecular structure; variability in structure; identification of timbers; properties of wood - influence of structure; density of wood; moisture in wood; strength, elasticity and toughness of wood;...
137p
mothoiphong
28-06-2024
1
1
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This study reported the experimental analysis on wood briquettes manufactured from Moso bamboo (Phyllostachys pubescens) and beech wood (Fagus sylvatica), regarded as an economically valuable fuel source. The following properties of briquettes: physical properties (density and moisture content); chemical properties (heating value, namely calorific value, and ash content); thermal properties (thermal conductivity and specific heat); and mechanical properties (breaking strength).
13p
hanthienngao
30-11-2021
12
0
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Genomic selection (GS) can offer unprecedented gains, in terms of cost efficiency and generation turnover, to forest tree selective breeding; especially for late expressing and low heritability traits. Here, we used: 1) exome capture as a genotyping platform for 1372 Douglas-fir trees representing 37 full-sib families growing on three sites in British Columbia, Canada and 2) height growth and wood density (EBVs), and deregressed estimated breeding values (DEBVs) as phenotypes. Representing models with (EBVs) and without (DEBVs) pedigree structure.
16p
vilarryellison
29-10-2021
28
0
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This study was carried out to investigate the variations in WD, MOR, and MOE from the pith to bark and along the stem of trees. From the results obtained, the correlations between WD and MOR; WD and MOE were also discussed
6p
retaliation
18-08-2021
9
2
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Non-key traits (NKTs) in radiata pine (Pinus radiata D. Don) refer to traits other than growth, wood density and stiffness, but still of interest to breeders. Branch-cluster frequency, stem straightness, external resin bleeding and internal checking are examples of such traits and are targeted for improvement in radiata pine research programmes.
10p
vijeeni2711
24-07-2021
11
0
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This study aimed to investigate the effect of age on some physical and mechanical properties of Acacia mangium planted in Thai Nguyen province such as air-dry density (AD), modulus of rupture (MOR), and modulus of elasticity (MOE).
7p
caygaocaolon10
01-02-2021
18
2
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The physical and proximate analysis of the fuel used during cooking was determined. The properties viz., moisture content fixed carbon, volatile matter, ash content was determined and the physical properties like bulk densities, resistance to water penetration and the shatter resistance of agro residue briquettes were determined to know the suitability of fuel for cook stove.
18p
nguaconbaynhay6
24-06-2020
16
0
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Wood basic density (WBD), the biomass of plant cell walls per unit volume, is an important trait for elite tree selection in kraft pulp production. Here, we investigated the correlation between WBD and wood volumes or wood properties using 98 open-pollinated, 2.4 to 2.8 year-old hybrid Eucalyptus (Eucalyptus urophylla x E. grandis). Transcript levels of lignocellulose biosynthesis-related genes were studied.
12p
vichoji2711
29-04-2020
10
1
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Date palm (Phoenix dactylifera L.) is a monocotyledon of the family of the Palmae. The date palm is grown in Kutchh region of Gujarat. The physical properties of dates fruits (Variety: Zahidi) are necessary for the design of the equipment to handle, transport, process and storage. In this study some physical properties of dates fruits determined as a function of moisture content namely, dimensions, arithmetic and geometric mean diameter, sphericity, surface area, 1000 unit mass, bulk density, true density, porosity, angle of repose and coefficient of static friction.
7p
kethamoi2
15-12-2019
23
0
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Since density may have a direct influence on wood properties and because density is a factor under genetic control, this study details the effects of seed origins and sites on density. In addition to seed origins, its variability both within and between trees was also examined.
10p
aquaman27
15-01-2019
42
1
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Various methods were progressively investigated to determine wood density within the most reliable void volume (porosity) values. Three softwood species of Bornmulleriana fir (Abies bornmulleriana Mattf.), Eastern spruce (Picea orientalis Lipsky), and Scots pine (Pinus sylvestris L.) grown indigenously in Turkey were selected to obtain a comparison among the green volume (GV), oven dry (OD) and maximum moisture content (MMC) methods.
6p
masterbarista
14-01-2019
27
1
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The significance of these changes was discussed in relation to the FSP, the activity of which was barely detectable. MC values above the FSP stimulate and decrease the retention of preservative in the wood voids, whereas MC values below the FSP influence the preservative uptake due to the effect of the voids available in wood.
7p
masterbarista
14-01-2019
29
1
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This study was carried out to evaluate the bending moment resistance and stiffness of case-type furniture corner joints constructed with wood biscuits, and to determine the effects on these joints of some factors including the spacing between wood biscuit hole centers, the distance from the center of the biscuit hole to the corresponding outside edge of the board material, the method of loading, the type of composite board, and the gluing technique.
9p
masterbarista
14-01-2019
25
1
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The mechanical properties of eucalyptus wood flours (EWF) filled recycled high density polyethylene (HDPE) composites were investigated. First thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) analysis were conducted for recycled HDPE and EWF.
10p
masterbarista
15-01-2019
18
1
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The patterns of wood density and shrinkage in different directions in 22-year-old Populus euramericana trees from one clone were studied in an experimental plantation in Iran.
6p
masterbarista
15-01-2019
18
1
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Corn stalk is a renewable natural resource that currently has limited industrial utilization. The objective of this study was to examine some chemical properties of corn stalk (holocellulose, α-cellulose, lignin and ash content, alcoholbenzene, hot and cold water solubility, and solubility in dilute alkali [1% NaOH]) and to evaluate its suitability for medium-density fiberboard (MDF) production.
10p
masterbarista
15-01-2019
30
1
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The aim of this study was to determine some of the anatomical, physical, and mechanical properties of 35-yearold Pinus eldarica Medw. wood. For this purpose, 3 normal pine trees were randomly cut down from the GaragpasKelardasht site located in the northern part of Iran.
12p
masterbarista
15-01-2019
28
1
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The static bending strengths, modulus of rupture, and modulus of elasticity of 5 commercial wood-based composites [softwood plywood (SWP), hardwood plywood (HWP), medium density fiber-board (MDF), oriented strand board (OSB), and particleboard (PB)] were measured after a postmanufacture treatment of vacuum-impregnation with alkaline copper quat (ACQ) and copper azole (CA).
6p
vimb123
11-01-2019
12
1
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In this paper, static bending (modulus of rupture, MOR, and modulus of elasticity, MOE) and compression strength parallel to grain (σcǀǀ) of black alder wood (Alnus glutinosa Gaertn.) were investigated. For experimental testing, we used black alder wood from two different areas: Crni Jarci, Croatia, and Malá Bystřice, Czech Republic.
6p
danhdanh11
09-01-2019
17
2
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In this study it was proposed to investigate the effect of altitude and aspect on anatomical properties, wood density, and mechanical properties of Oriental beech (Fagus orientalis Lipsky) growing in Sinop, Turkey. Five altitude steps (0–200, 200–400, 400–600, 600–800, and 800–1000 m) and two aspect groups (north and south) were created in the research area.
10p
danhdanh11
09-01-2019
18
2
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